The invention relates to a water dispenser barrel. The water dispenser barrel comprises a hard outer barrel and a soft inner container and is characterized in that the hard outer barrel comprises a barrel opening part, a barrel body and a bottom plate, the barrel opening part is provided with a top cover, the top cover is provided with a first water guide port allowing a water guide pipe to insertinto, the center of the bottom plate is provided with a mounting hole, a mounting part is arranged around the mounting hole, a bottom cover is detachably connected to the mounting part, the mountingpart is provided with an annular boss protruding inwardly, and the bottom cover is provided with a plurality of air holes; the soft inner container comprises an inner container body, an inner container head and an inner container tail, the inner container body is produced by a whole soft material, the inner container head is formed by an inner lantern ring and an outer lantern ring which clamp theinner container body, the inner container tail is formed by a sealing device clamping the inner container body, the inner container head is inserted into the barrel opening part, and the inner container tail is connected with the annular boss. The water dispenser barrel has the advantages that the soft inner container of the barrel is disposable, and the inner container body cannot be reused.